The invention provides a pushing device and a lifting appliance, and belongs to the field of rock stratum breaking equipment. The pushing device comprises a first pushing piece, a second pushing pieceand a pushing oil cylinder, the upper end of the first pushing piece is movably connected with the upper end of the second pushing piece, the pushing oil cylinder comprises a cylinder base and a cylinder head, and the cylinder head is in sliding connection with the cylinder base, the pushing oil cylinder is arranged between the first pushing piece and the second pushing piece, and one end of thepushing oil cylinder is connected with the second pushing piece. When the device is used, the lower part of the pushing device is put into a rock stratum groove, then pressure oil is introduced into the pushing oil cylinder to enable the pushing oil cylinder to extend, so that the rock stratum is cracked through pushing force, in the construction process, the pushing oil cylinder is located belowthe first pushing piece and the second pushing piece and located in a gap formed between the first pushing piece and the second pushing piece, when gravels fall off, the two pushing pieces cover the upper portion of the pushing oil cylinder, and the falling gravels can be effectively prevented from directly falling onto the cylinder head, and therefore, due to the design of the rock stratum pushing device, damage of the gravels to the cylinder head can be reduced, and the service life of the pushing oil cylinder is effectively prolonged, and the rock breaking efficiency is further improved.

    本发明提供了一种顶推装置及吊具,属于岩层破除设备领域。上述顶推装置包括第一顶推件、第二顶推件就顶推油缸,第一顶推件的上端与第二顶推件的上端活动连接。顶推油缸包括缸座和缸头,缸头与缸座滑动连接;顶推油缸设置在第一顶推件与第二顶推件之间,顶推油缸的一端与第二顶推件连接。其在使用时,将顶推装置的下部放入到岩层开槽中;然后给顶推油缸通入压力油使其伸长,从而通过推力使岩层裂开。施工过程中,顶推油缸位于第一顶推件和第二顶推件的下方,并位于两者之间形成的间隙中;当碎石掉落时,两个顶推件罩在顶推油缸的上方,其能够有效防止落下的碎石直接落到缸头上。因此,上述岩层顶推装置的设计能够降低碎石对缸头的损坏,有效提高顶推油缸的使用寿命;进而提高岩石破除效率。


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    Title :

    Pushing device and lifting appliance


    Additional title:

    一种顶推装置及吊具


    Contributors:
    LING JIE (author)

    Publication date :

    2020-11-17


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    E21B EARTH OR ROCK DRILLING , Erd- oder Gesteinsbohren / B66C Krane , CRANES



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